Photosynthesis
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The Calvin experiments
Animation with narration on the carbon 14 experiments carried out by Calvin and others to follow the reactions of photosynthesis.
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The work of Calvin and Benson on photosynthesis
Interesting clip on how the details of photosynthetic reactions were worked out by Calvin and Benson, from BBC Class Clips.
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Virtual cell animation
On Youtube – animation on photosynthesis.